Dim Weight Calculator
Calculate dimensional weight (DIM weight) for shipping. Enter package dimensions and actual weight to determine billable weight.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Dim Weight Calculator
This calculator determines the dimensional weight (DIM weight) and billable weight for shipping packages. All measurements must be in inches and pounds (imperial system).
- Enter dimensions: Input the package’s Length, Width, and Height in inches (e.g., 12, 10, 8).
- Enter actual weight: Input the package’s actual weight in pounds (e.g., 5).
- Select carrier: Choose your shipping carrier from the dropdown—each uses a different DIM divisor (e.g., UPS/FedEx uses 139).
- Click Calculate: Press the button to see results.
What you get:
- Dimensional Weight: Calculated as (Length × Width × Height) ÷ divisor.
- Billable Weight: The greater of the dimensional weight and actual weight—this is what you’ll be charged for.
- A breakdown showing the formula used.
Tip: If any input is missing or not positive, an error message will appear.
Previous Results
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Frequently Asked Questions
Dimensional weight (DIM weight) is a pricing technique used by shipping carriers to account for the space a package occupies in relation to its actual weight. It is calculated by multiplying length, width, and height, then dividing by a carrier-specific divisor.
Common divisors: UPS/FedEx use 139, USPS uses 166, and DHL uses 194. Check with your carrier for the most current divisor, as it may change.
Billable weight is the greater of the actual weight and the dimensional weight. Carriers charge based on the billable weight.